Ordovician carbonate reservoir fracture characteristics and fracture distribution forecasting in the Tazhong area of Tarim Basin, Northwest China

Ding, Wenlong; Tang, Fan; Yu, Bingsong; Huang, Xiaobo; Tong, Baohong

doi:10.1016/j.petrol.2012.03.006

Cited by 73 publications

(23 citation statements)

References 10 publications

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“…Each unit is analyzed separately and then as a whole (Fischer and Henk, 2013;Ju Wei et al, 2013b, 2014a. Each unit is connected by nodes, and the measured rock mechanical parameters are applied to each unit (Ding et al, 2012a;Jiu et al, 2013b). The linear algebraic equations of finite elements are as follows:…”

Section: Numerical Simulation Of Paleotectonic Stress Fields 311 Mamentioning

confidence: 99%

“…The finite element method (FEM), based on geomechanical modeling can predict not only the distribution of the paleotectonic stress fields (Ju et al, 2014b), but also the development of tectonic fractures based on rock rupture (Ju et al, 2015). The inversion of paleotectonic stress fields and prediction of tectonic fractures is synchronous (Ding et al, 2012a;Jiu et al, 2013a), and the coupling of paleotectonic stress fields and the development of tectonic fractures has been analyzed (Fischer and Henk, 2013;Ju Wei et al, 2013b, 2014a, show the obvious advantages of the FEM. The FEM has been widely used in the prediction of tectonic fractures for tight oil reservoirs, and has achieved good results (Ju and Sun, 2016).…”

Section: Introductionmentioning

confidence: 99%

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Simulation of Paleotectonic Stress Fields and Distribution Prediction of Tectonic Fractures at the Hudi Coal Mine, Qinshui Basin

Fang

Sang

Wang

et al. 2017

Acta Geologica Sinica (Eng)

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Study on tectonic fractures based on the inversion of tectonic stress fields is an effective method. In this study, a geological model was set up based on geological data from the Hudi Coal Mine, Qinshui Basin, a mechanical model was established under the condition of rock mechanics and geostress, and the finite element method was used to simulate the paleotectonic stress field. Based on the Griffith and Mohr‐Coulomb criterion, the distribution of tectonic fractures in the Shanxi Formation during the Indosinian, Yanshanian, and Himalayan period can be predicted with the index of comprehensive rupture rate. The results show that the acting force of the Pacific Plate and the India Plate to the North China Plate formed the direction of principal stress is N‐S, NW ‐ SE, and NE ‐ SW, respectively, in different periods in the study area. Changes in the direction and strength of the acting force led to the regional gradients of tectonic stress magnitude, which resulted in an asymmetrical distribution state of the stress conditions in different periods. It is suggested that the low‐stress areas are mainly located in the fault zones and extend along the direction of the fault zones. Furthermore, the high‐stress areas are located in the junction of fold belts and the binding site of multiple folds. The development of tectonic fractures was affected by the distribution of stress intensity and the tectonic position of folds and faults, which resulted in some developed areas with level I and II. There are obvious differences in the development of tectonic fractures in the fold and fault zones and the anticline and syncline structure at the same fold zones. The tectonic fractures of the Shanxi Formation during the Himalayan period are more developed than those during the Indosinian and Yanshanian period due to the superposition of the late tectonic movement to the early tectonic movement and the differences in the magnitude and direction of stress intensity.

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Section: Numerical Simulation Of Paleotectonic Stress Fields 311 Mamentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Simulation of Paleotectonic Stress Fields and Distribution Prediction of Tectonic Fractures at the Hudi Coal Mine, Qinshui Basin

Fang

Sang

Wang

et al. 2017

Acta Geologica Sinica (Eng)

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“…The second highest DBT concentration of 523 lg/g in TZ103 only requires 10% of an oil/condensate like ZS1C to mix with a DBT poor oil/condensate like ZS1. TSR impact is restricted to the east section of Tazhong Uplift especially the Tazhong 4 block, which is controlled by several deep basal faults in the Tazhong-4 oilfield (Ding et al, 2012;Li et al, 2012;Pang et al, 2012). The variation of H 2 S contents, gas/oil ratios and API gravity along the intersections of the main fault systems in the Tazhong Uplift indicates that vertical migration and mixing of hydrocarbons has occurred .…”

Section: Mixingmentioning

confidence: 99%

“…The variation of H 2 S contents, gas/oil ratios and API gravity along the intersections of the main fault systems in the Tazhong Uplift indicates that vertical migration and mixing of hydrocarbons has occurred . No obvious TSR influence in the Tabei oils and condensates is observed, because oil charge is partially controlled by different migration pathways as the traps on the Tabei Uplift were laterally drained through unconformities (Ding et al, 2012). However, more investigation for TSR occurrence and its impact is required.…”

Section: Mixingmentioning

confidence: 99%

Geochemistry of Paleozoic marine petroleum from the Tarim Basin, NW China: Part 5. Effect of maturation, TSR and mixing on the occurrence and distribution of alkyldibenzothiophenes

Zhang

Huang

Jin

et al. 2015

Organic Geochemistry

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“…Since the deposition of the Yingshan Formation, the Tazhong Low Rise experienced several tectonic events after the middle Caledonian (Kang and Kang, 1996;Ding et al, 2012). The palaeo-high pattern was formed in the Ordovician, developed during the Silurian and Devonian, formalized in the late Devonian, and then stabilized after the Late Palaeozoic (Jia, 1997;Kang, 2002;Li et al, 2010a;Lin et al, 2012).…”

Section: Regional Geologymentioning

confidence: 99%

Early Palaeozoic carbonate reservoirs from the Yingshan Formation of Well block ZG-43 in Tazhong Low Rise, Central Uplift, Tarim Basin, NW China: geological features and controlling factors

Lan

Lü

et al. 2013

Geol. J.

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Marine carbonate reservoirs, as a focus of petroleum exploration and development in China, are involved with high exploration risk and prediction difficulty owing to high heterogeneity and diversity of reservoir beds. In the Tarim Basin, NW China, carbonate reservoirs host about 38% of the whole basin's hydrocarbon resources in a large prospecting area mainly distributed in the Cambrian and Ordovician rocks in central (Tazhong) and northern (Tabei) Tarim. Recently, a better understanding has been made of the karsted weathering crust at the top of the Lower Ordovician Yingshan Formation in the northern slope area of the Tazhong Low Rise, Central Uplift, Tarim Basin. As a new frontier of exploration, oil/gas distribution and controlling factors of carbonate reservoirs in the Yingshan Formation are not clearly understood. In this work, we investigated the reservoir beds and oil/gas properties in 13 wells in Well block ZG‐43 on the No. 10 structural belt in the Tazhong Low Rise, and studied hydrocarbon accumulation characteristics with seismic and geochemical data. The Yingshan Formation in Well block ZG‐43 is mainly composed of calcarenite, dolomitic limestone, dolomite, cryptite, as low porosity and low permeability reservoir beds, with fracture‐void porosity constituting the main reservoir pore space. Oil/gas is quasi‐layer distributed beneath the unconformity between the Yingshan and Lianglitag formations to a depth of 140 m. The oil in Well block ZG‐43 is condensate with low density, low viscosity, low sulphur, low resin, low asphaltene, and high wax. The gas is 87.3% methane, generally containing H2S. The oil/gas distribution pattern is oil in the east and gas in the west, and H2S content in the west is lower than that in the east. The controlling factors for hydrocarbon are multi‐source supply and multi‐phase charging, interstratal karstification, hydrothermal activity, structural location and sealing condition. A structural–lithological trap is the main type of oil/gas accumulation. Oil/gas distribution was clearly affected by strike–slip faults. Oil/gas with multi‐source supply and multi‐phase charging was controlled by favourable local palaeo‐highs, and affected by later karsting and hydrothermal activity, as well as gas invasion in the Himalayan (Cenozoic) period. Under the caprock of compact limestone in the third to fifth members of the Lianglitag Formation, oil/gas migrated up along the strike–slip fault planes, and moved laterally to both sides in a ‘T’ shape, and formed large‐scale quasi‐layer condensate gas reservoirs controlled by reservoir bed quality. Copyright © 2013 John Wiley & Sons, Ltd.

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Ordovician carbonate reservoir fracture characteristics and fracture distribution forecasting in the Tazhong area of Tarim Basin, Northwest China

Cited by 73 publications

References 10 publications

Simulation of Paleotectonic Stress Fields and Distribution Prediction of Tectonic Fractures at the Hudi Coal Mine, Qinshui Basin

Simulation of Paleotectonic Stress Fields and Distribution Prediction of Tectonic Fractures at the Hudi Coal Mine, Qinshui Basin

Geochemistry of Paleozoic marine petroleum from the Tarim Basin, NW China: Part 5. Effect of maturation, TSR and mixing on the occurrence and distribution of alkyldibenzothiophenes

Early Palaeozoic carbonate reservoirs from the Yingshan Formation of Well block ZG-43 in Tazhong Low Rise, Central Uplift, Tarim Basin, NW China: geological features and controlling factors

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